Lubricating stuffing-box.



No. 760,686. r PATENTED'MAY 24, '1904. P. G.`PURLO W.

LUBRIGATING STUPFING B0X.

v APPLICATION FILED SEPT. 25. 1903 No MODEL. v

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UNITED STATES Patented May 21, 1904 l PATENT OFFICE. 7

, LUB'RIQATING. sTuFFlNe-Box.

SPECIFICATION forming part of Letters Patent No. 760,686, dated May 24, 1904.-

, Application filed September 1903. Serial No. 174,626. (No model.)

T0 a/ZZ wila/0m t may concern.'

Be itknown that I, FLOYD C. FURLoW, of

` The present invention relates to a stuffing-l box construction particularly designed for maintaining the continued and eiiicicnt' lubriycation'of the rod or plunger encircled by the box. This result -I accomplish by providing lthe devicewith a chamber for holding the lubricant, this chamber being open tothe sliding surface of the plunger, so that the lubricant with which 'the chamber is charged 'may' have access thereto. .lubricant (preferably grease) adheres to the As a result a lilm of the plunger, lubricates the sliding metallic parts,

and the packing aswell, minimizesleakage,`

and prevents the corrosion of the plunger.

I prefer also to combine with'the device a wiper' for removing lany dust or dirt that may collect on the plunger, and thus prevent such material from being carried into the gland of' the stuiiing-box.

The various features of the present im-lprovements are illustrated in the accompanying drawings, in which- Figure 1 is a plan view of a stuffing-box..

construction embodying'the present invention, and Fig. 2 is a longitudinal median section thereof. y

Similar characters of reference designate like parts in both vfigures.

One of the most important features of the present improvements pertains to the provision, in a stuffing-box construction, of a lubricant-holding chamber or channel from which the lubricant (I prefer the use of grease) may pass' to the periphery of the plunger or rod passingthrough the stuiiing-box. Such chamber or channel is closed on all sides except that across which the surface of the plunger moves. rPhew chamber thus becomes a compression-chamber, the grease in which upon being subjected to pressure is forced outward and adheres to the plunger. The said chamber or channel is in the preferred construction formedin the gland of thestufling-box,

and as the plunger passes -inward the film of reception 4of the packing.

4plunger and adheres thereto.

grease adhering thereto becomes eective to p lubricate the packing. Philadelphia, Pennsylvania, have invented a The body of the stuHing-box (dcsignatedin vtheivira'wings by 2') may be of the desired-form and proportions and obviously integral with or separate from` the part (or a portion of rod passing through the central opening in the box. The latter is here shown provided with4 the usual shoulder 3, between which and the end of the extending annular lip 4 ofthe gland 5 an annular spaceis formed for the Y (Not shown.) Adjacent tol the outer end of the gland there is lprovided a grease-holding chamber or channel 6, which it will be noted is closed in all directions except radially inward toward the bore ofthe gland. This chamber is designed forbeing charged with grease, preferably, which under pressure or when somewhat liquefied moves'inward against the Some means, such as acompression-cup 7 on the gland, may be used to supply the chamber with grease and put the latter under compression.

Preferablya wiper, such as a ring 8, of felt or other suitable material, is used for removing any excess of grease that may adhere to the plunger, as well as dirt, &c., likely to contaminate the grease on the inward movement of the plunger. The` bore of this ring is suf` ciently small to cause it to rub against the plunger, while it may be held in place by a keeper 9, secured in this instance by screws l0. The clamping-boltsfor the gland are indicated. They may'consist of threaded studs 1l, engaged with which are nuts 12, and the openings in the gland through which they may pass are so formed as not to form an exit for the grease. Y

The stuffing-box body may be provided with Y aguard, indicated in this instance -as in the form' of an upwardly-extending lip 13, for

.the latter) into-Which leads the plunger orv IOO mounted on the gland, a wiper-ring on the outside of the gland and a keeper for holding the wiper-ring in place.

2. A stuffing-box provided with a gland having at its outer end ahollow laterally-extending holding-flange, combined with holding Y means'engaging-with the ilange of the gland,

and a lubricant-holder communicating with the interior space of said lange.

3. A stufIing-boX provided with a gland having at its outer end ahollow laterally-extending holding-flange through which pass boltopenings shut oil from the Space within the flange, holding-bolts passing through said openings, and a lubricant-holder communicating with the interior space of said flange. v

4L. A stuffing-box provided with a gland having at its outer end a hollow laterally-extending holding-ange, combined with holding means engaging with the ilange of the gland, a lubricant-holder communicating with the interior space of said flange, and a wiper-ring completely encircling the rod-opening through the stuHing-box and secured to the outer fac of said flange.

5. A stuiiing-box provided with a gland having at its outer end a hollow laterally-extending holding-ilange through which pass boltopenings shut oil from the space within the flange, holding-bolts passing through said openings, a lubricant-holder communicating with the interior space of said lange, and a wiper-ring completely encircling the -rodopening through the stuffing-box and' secured to the outer face of said flange.

6. A stuffing-box having a body portion and provided with a gland having a hollow laterally-extending holding-ilange, combined with a guard extending from said body portion and encircling said gland, holding means engaging with the ange of the gland, and a lubricant-holder communicating with the interior space of said flange.

7 A stufiing-box having abody portion and provided with a gland having a hollow laterally-extending holding-flange, combined with a guard extending from said body portion and encircling said gland, holding means engaging with the flange of the gland, a lubricantholder communicating with the interior space of said lange, and a wiper-ring completely encircling the rod-opening in the stuiling-box and secured to the outer face of said flange.

8. The combination with a stuiiing-box provided with a gland and formed with a lubricant pressure-chamber, of a wiper-ring completely encircling the rod-opening through the stuiling-box and contacting with the outer face of said gland, and a keeper-ring laid over said wiper-ring and screw-fastened to the gland.

9. In a stufiing-box, the combination with a body portion of a chambered gland through which pass openings shut oil' from the chamber in the gland, holding-bolts passing th rough said openings, a wiper-ring completely encircling the rod-opening through the stuilingboX and contacting with the outer face of said gland, a keeper-ring laid over said wiper-ring and screw-fastened t0 the gland, a compression-cup mounted on the gland, and a receptacle-forming guard extending from the said body portion, said receptacle having an openin'g for the engagement oi' a draining-conduit.

1n testimony whereof I have hereunto signed my name to this speciiication in the presence of two subscribing witnesses.

FLOYD C. FURLO\V.

llfitnesses:

ADA W. SUMERFIELD, WILLIAM R. Lrnnnin. 

